5-Chloro-2'-deoxyuridine

Also known as: 5-Chlorodeoxyuridine, 2'-Deoxy-5-chlorouridine, Chlorodeoxyuridine, CldU, CLUDR

5-Chloro-2'-deoxyuridine (CAS 50-90-8) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C9H11ClN2O5 and a molecular weight of 262.64700 g/mol. Key properties include a melting point of 176-179ºC and a density of 1.67 g/cm3. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H312 — Harmful in contact with skin and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 50-90-8
Jingsj CID: J-1956991-0
Molecular Formula: C₉H₁₁ClN₂O₅
Molecular Weight: 262.64700 g/mol
Category: Organohalogen Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	176-179ºC
Density	1.67 g/cm3
Exact Mass	262.03600
PSA	104.55000
Refractive Index	1.644

GHS Safety & Compliance

Irritant / Health HazardSignal word: Warning

H302 — Harmful if swallowed
H312 — Harmful in contact with skin
H332 — Harmful if inhaled
H351 — Suspected of causing cancer

Activity & Biological Data

Additional Information	[1]. Kim CH, et al. Polymerase incorporation and miscoding properties of 5-chlorouracil. Chem Res Toxicol. 2010 Apr 19;23(4):740-8. [2]. Yuan CJ, et al. Extended access methamphetamine decreases immature neurons in the hippocampus which results from loss and altered development of neural progenitors without altered dynamics of the S-phase of the cell cycle. Pharmacol Biochem Behav. 2011 Nov;100(1):98-108.

Additional Information

[1]. Kim CH, et al. Polymerase incorporation and miscoding properties of 5-chlorouracil. Chem Res Toxicol. 2010 Apr 19;23(4):740-8. [2]. Yuan CJ, et al. Extended access methamphetamine decreases immature neurons in the hippocampus which results from loss and altered development of neural progenitors without altered dynamics of the S-phase of the cell cycle. Pharmacol Biochem Behav. 2011 Nov;100(1):98-108.

Customs & Trade Information

HS Code	2942000000

Frequently Asked Questions

What is the CAS number of 5-Chloro-2'-deoxyuridine?

The CAS number of 5-Chloro-2'-deoxyuridine is 50-90-8.

What are the molecular formula and molecular weight of 5-Chloro-2'-deoxyuridine?

5-Chloro-2'-deoxyuridine has molecular formula C9H11ClN2O5 and molecular weight 262.64700 g/mol.

Is 5-Chloro-2'-deoxyuridine hazardous?

5-Chloro-2'-deoxyuridine has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H312 — Harmful in contact with skin; H332 — Harmful if inhaled.

What are the upstream and downstream products of 5-Chloro-2'-deoxyuridine?

For 5-Chloro-2'-deoxyuridine, Upstream Products: 2'-deoxyuridine, 3',5'-Di-O-acetyl-2'-deoxyuridine, idoxuridine; Downstream Products: 5-Chlorouracil.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "5-Chloro-2'-deoxyuridine (CAS 50-90-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1956991-0 (accessed 2026-11-07).

Data for reference only; verify product details with suppliers before purchase.